ARM AMBA NIC-301 Especificações descarregar pdf (Página 165)

HDLCD controller

ID062813 Non-Confidential

Frame Buffer Line Pitch Register

The FB_LINE_PITCH Register characteristics are:

Purpose Holds the number of bytes between the start of one line in the frame buffer

and the start of the next line. This value is treated as a signed 2’s

complement number, enabling negative pitch if required.

Usage constraints There are no usage constraints.

Configurations Available in all HDLCD controller configurations.

Attributes See Table B-1 on page B-3.

Figure B-9 shows the bit assignments.

Figure B-9 Frame Buffer Line Count Register bit assignments

Table B-10 shows the bit assignments.

Bus Options Register

The BUS_OPTIONS Register characteristics are:

Purpose Controls aspects of how the LCD controller accesses the bus. This value

can be tuned to better match the characteristics of the memory controller

and other units in the system.

Usage constraints There are no usage constraints.

Configurations Available in all HDLCD controller configurations.

Attributes See Table B-1 on page B-3.

Figure B-10 on page B-12 shows the bit assignments.

31 302

FB_LINE_PITCH

Reserved

Table B-10 Frame Buffer Line Count Register bit assignments

Bits Name Function

[31:3] FB_LINE_PITCH Frame buffer line pitch

[2:0] - Reserved, write as zero, read undefined

1 2 ... 160 161 162 163 164 165 166 167 168 169 170 ... 177 178

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